SM 1.5/3-TC1 Bosch Rexroth Indramat
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MPN: 1070075977
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The Bosch Rexroth Indramat SM 1.5/3-TC1 is part of the SM AC Inverters series and provides a peak current of 3 Amps and a rated current of 1.5 Amps. It features a module supply tolerance from 23 to 25.2 Volts and supports a reset signal of 24 Volts. The mounting screw torque is 3.7 Nm and the minimum reset delay is 2 seconds.
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Product Description:
The SM 1.5/3-TC1 AC inverter module is produced by Bosch Rexroth Indramat as part of the SM AC Inverters series. It mounts in small-frame automation cabinets, converting the DC link energy supplied by the drive system into controlled AC output that matches the needs of low-power actuators and sensors. Within an industrial automation line, the unit acts as a current-limiting interface that protects downstream electronics and provides repeatable power delivery for motion sequences and feedback channels.
During normal operation, the inverter delivers a rated phase current of 1.5 A, allowing continuous control of light-duty motors or servo coils. For acceleration or short-term torque demands, the circuitry can rise to a peak of 3 A before the protection logic intervenes. The input supply terminals accept a regulated module voltage in the 23 to 25.2 V window; staying inside this tolerance maintains internal reference levels and prevents undervoltage faults. A dedicated reset line expects a 24 V signal from the supervising PLC, and the control circuit enforces a minimum recovery delay of 2 s after each trip so temperatures can return to safe limits and fault registers can clear.
Mechanical and feedback provisions complete the electrical profile. The housing fixes to a heat sink or panel with screws tightened to 3.7 ± 0.2 Nm, providing the clamping force needed to maintain ground continuity and vibration resistance. Encoder supply on the Se-d1 port is stabilized at +15 V DC, powering incremental sensors without an external regulator, while the adjacent tachometer channel outputs 2.7 V/1000 rpm, giving the controller a speed-proportional voltage for closed-loop regulation. When thermal loading exceeds design limits, the overload algorithm automatically decreases current from Imax to IN, ensuring that semiconductor junctions remain within their specified temperature envelope during extended high-duty cycles.
